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122 changes: 122 additions & 0 deletions
122
openhtmltopdf-core/src/test/java/com/openhtmltopdf/layout/BreakerTestSupport.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| package com.openhtmltopdf.layout; | ||
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| import static org.hamcrest.core.IsEqual.equalTo; | ||
| import static org.junit.Assert.assertThat; | ||
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| import java.util.Arrays; | ||
| import java.util.EnumSet; | ||
| import java.util.function.ToIntFunction; | ||
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| import com.openhtmltopdf.extend.FSTextBreaker; | ||
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| public class BreakerTestSupport { | ||
| enum ContextIs { | ||
| UNBREAKABLE, | ||
| NEEDS_NEW_LINE, | ||
| FINISHED_IN_CHAR_BREAKING_MODE, | ||
| FINISHED, | ||
| ENDS_ON_NL, | ||
| /** | ||
| * This should really be called ENDS_ON_VISIBLE_SOFT_HYPHEN. | ||
| */ | ||
| ENDS_ON_SOFT_HYPHEN, | ||
| ENDS_ON_WORD_BREAK | ||
| } | ||
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| static void assertContextIs(LineBreakContext context, ContextIs... trues) { | ||
| EnumSet<ContextIs> truthy = trues.length > 0 ? | ||
| EnumSet.copyOf(Arrays.asList(trues)) : | ||
| EnumSet.noneOf(ContextIs.class); | ||
| boolean desired; | ||
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| desired = truthy.contains(ContextIs.UNBREAKABLE); | ||
| assertThat(context.isUnbreakable(), equalTo(desired)); | ||
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| desired = truthy.contains(ContextIs.NEEDS_NEW_LINE); | ||
| assertThat(context.isNeedsNewLine(), equalTo(desired)); | ||
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| desired = truthy.contains(ContextIs.FINISHED_IN_CHAR_BREAKING_MODE); | ||
| assertThat(context.isFinishedInCharBreakingMode(), equalTo(desired)); | ||
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| desired = truthy.contains(ContextIs.FINISHED); | ||
| assertThat(context.isFinished(), equalTo(desired)); | ||
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| desired = truthy.contains(ContextIs.ENDS_ON_NL); | ||
| assertThat(context.isEndsOnNL(), equalTo(desired)); | ||
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| desired = truthy.contains(ContextIs.ENDS_ON_SOFT_HYPHEN); | ||
| assertThat(context.isEndsOnSoftHyphen(), equalTo(desired)); | ||
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| desired = truthy.contains(ContextIs.ENDS_ON_WORD_BREAK); | ||
| assertThat(context.isEndsOnWordBreak(), equalTo(desired)); | ||
| } | ||
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| private static class SimpleCharBreaker implements FSTextBreaker { | ||
| private String text; | ||
| private int pos; | ||
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| @Override | ||
| public int next() { | ||
| return pos > text.length() ? -1 : pos++; | ||
| } | ||
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| @Override | ||
| public void setText(String newText) { | ||
| this.text = newText; | ||
| this.pos = 0; | ||
| } | ||
| } | ||
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| private static class SimpleLineBreaker implements FSTextBreaker { | ||
| private String text; | ||
| private int position; | ||
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| @Override | ||
| public int next() { | ||
| if (this.position == -1) { | ||
| return -1; | ||
| } | ||
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| int ret = text.indexOf(' ', this.position); | ||
| int softHyphen = text.indexOf('\u00ad', this.position); | ||
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| if (softHyphen != -1 && (softHyphen < ret || ret == -1)) { | ||
| ret = softHyphen; | ||
| } | ||
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| this.position = ret < 0 ? -1 : ret + 1; | ||
| return this.position; | ||
| } | ||
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| @Override | ||
| public void setText(String newText) { | ||
| this.text = newText; | ||
| this.position = 0; | ||
| } | ||
| } | ||
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| static FSTextBreaker createLine(String line) { | ||
| SimpleLineBreaker breaker = new SimpleLineBreaker(); | ||
| breaker.setText(line); | ||
| return breaker; | ||
| } | ||
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| static FSTextBreaker createChar(String line) { | ||
| FSTextBreaker breaker = new SimpleCharBreaker(); | ||
| breaker.setText(line); | ||
| return breaker; | ||
| } | ||
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| static LineBreakContext createContext(String str) { | ||
| LineBreakContext ctx = new LineBreakContext(); | ||
| ctx.setMaster(str); | ||
| return ctx; | ||
| } | ||
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| static final ToIntFunction<String> MEASURER = (str) -> str.length(); | ||
| static final ToIntFunction<String> MEASURER3 = (str) -> str.length() * 3; | ||
| static final ToIntFunction<String> MEASURER_WITH_ZERO_WIDTH_SOFT_HYPHEN = (str) -> { | ||
| long softHyphenCount = str.chars().filter(ch -> ch == Breaker.SOFT_HYPHEN).count(); | ||
| return (int) (str.length() - softHyphenCount); | ||
| }; | ||
| } |
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